Home / 10,343.60-15,515.40-7,427.60

Finding the Fourth Proportional to 10,343.60, 15,515.40 and 7,427.60

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Solution

The fourth proportional to 10,343.60, 15,515.40 and 7,427.60 is: 11,141.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,343.60 : 15,515.40 = 7,427.60 : x
  2. Step 2: Convert to fraction form
    10,343.60/15,515.40 = 7,427.60/x
  3. Step 3: Cross multiply
    10,343.60x = 15,515.40 × 7,427.60
  4. Step 4: Simplify right side
    10,343.60x = 115,242,185.04
  5. Step 5: Solve for x
    x = 115,242,185.04/10,343.60
  6. Step 6: Final answer
    x = 11,141.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.